HyukjinKwon commented on code in PR #45776:
URL: https://github.com/apache/spark/pull/45776#discussion_r1549230211
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sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala:
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@@ -766,6 +778,15 @@ class DataFrameReader private[sql](sparkSession:
SparkSession) extends Logging {
}
}
+ /**
+ * A convenient function for paths validation in APIs.
+ */
+ private def assertNonEmptyPaths(paths: String*): Unit = {
+ if (userSpecifiedSchema.isEmpty) {
+ require(paths.nonEmpty, "The paths cannot be empty")
Review Comment:
What about SQL?
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